<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <meta http-equiv="X-UA-Compatible" content="ie=edge">
        <title>Document</title>
        <script src="./lib/vue-2.4.0.js"></script>
        <!-- 1. 导入包 -->
        <script src="./lib/vue-router-3.0.1.js"></script>
    </head>
    
    <body>
        <div id="app">
            <router-link to="/login">登录</router-link>
            <router-link to="/register">注册</router-link>

            <!-- 5. 引入容器 -->
            <router-view></router-view>
        </div>

        <script>
            // 2. 创建子组件
            var login = {
                template: '<h3>这是登录子组件，这个组件是 奔波霸 开发的</h3>'
            }

            var register = {
                template: '<h3>这是注册子组件，这个组件是 霸奔波 开发的</h3>'
            }

            // 3. 创建一个路由对象
            var router = new VueRouter({
                routes: [  // 路由规则数组
                    { path: '/', redirect: '/login'},
                    { path: '/login', component: login },
                    { path: '/register', component: register }
                ],
                linkActiveClass: 'myactive' // 和激活相关的类
            })

            var vm = new Vue({
                el: '#app',
                data: {
                   
                },
                methods: {
                    
                },
                // 4. 注入到 vm 中
                router,
                watch: {
                    // this.$route.path
                    '$route.path': function(newVal, oldVal) {
                        console.log(newVal + ' --- ' + oldVal)
                        if (newVal === '/login') {
                            console.log('欢迎进入登录页面')
                        } else if (newVal === '/register') {
                            console.log('欢迎进入注册页面')
                        }
                    }
                }
            });
        </script>
    </body>
</html>